Cultivator



(No Model.)

G. R. HARTMAN.

GULTIVATOR.

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mumognphe UNITED STATES` PATENT OFFICE.

CHARLES R. IIARTMAN, OF VINCENNES, INDIANA.

CULTIVATOR.

SPECIFICATION forming' part Of Letters Patent NO. 404,085, dated May 28, 1889.

Application filed November 7, 1888. Serial No. 290,187. (No model.)

T0 all whom it may conccrn:

Be it known that I, CHARLES R. HARTMAN, of Vincennes, in the County of Knox'and State of Indiana, have invented a new and useful improvement in Oultivators, of which the following is a specification.

My invention is an improvement in cultivators, having for an object to provide a simple construction by which the tooth may be set to different adj ustments and be firmly held in any suitable adj ustment.

The invention consists in certain novel constructions and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the drawings, Figure l is a perspective view of my improvement. Fig. 2 is a rear edge view of same. Fig. 3 is a cross-section on line x x, Fig. 6. Fig. 4 is a detail view of one of the cheeks, and Fig. 5 is a detail view of the foot-piece, all of Which will be described; and Fig. 6 is a section on about lineyy, Fig. 1.

The part A represents the rear end of an Ordinary cultivator-beam, to which is attached the cheeks B, the latter being pivoted by a rivet, D, to the said beam, and being arranged on opposite Sides thereof, as shown. 'The rivet D is arranged a't about the center of the cheeks, and does not operate to hold such cheeks tightly against the beam, but is loose enough to allow their lower ends to spread or expand suificiently to permit the adjustment of the tooth-Carrier E when the clamping or connecting bolt F is released or loosened.

Near their upper ends the side plates are held to the beam by a wooden or other fragile pin, G, so that in case the tooth strikes a stone, root, or other unyielding obstruction the said pin G will break, permittin g the tooth to turn back. iWIanifestly, instead of the break-pin G, I may use any suitable automatic trip device. The foot-piece E is pivoted at or near its upper end in and between the cheekpieces, being preferably provided with pivotend of the latter, such teeth e8 and b serving, when the parts B and E are clamped tightly together, to hold the foot-piece in any desired adjustment, the bolt F serving as a convenient means of drawing the cheeks tightly against the foot-piece and securing the same When so drawn. By loosening` bolt F the teeth disengage, and the foot-piece may be adjusted forward or back, as desired, and when set at the desired angle maybe securely clamped by the bolt F and its nut.

At its lower end the foot-piece has a split socket, H, the free edges of which are connected by the bolt h, by Which the clamp may be tightened to grip the round stem 'i of the shoe or tooth I, so that such stem may be set rotarily in the socket, which construction, in connection with the forward and back adjustment of the foot-pieces, makes the device w hat may be termed an every-way shovel holding and setting attachment, which may be conveniently applied to any of the Ordinary beams.

NVhile the construction before described will give good results, I find that better result-s are accomplished by the use of an expanding or spreader spring arranged to bear between the cheeks near their lower ends, to cause such cheeks to spread and disengage from the serrations of the tooth-piece When the bolt F is loosened. In the construction shown the spring J is a coil-spring held in an opening, E, in the foot-piece and bearing bet-Ween the cheeks, as shown in Figs. 3 and 6, the opening E' operating to retain the spring in proper position.

The construction is simple and inexpensive, as the several parts can be easily made of malleable iron and will be found efficient and durable in use.

It will be seen that the shovel may be set at any angle or inclination or be adj usted up or down to vary the depths at which it may run.

By means of the slit h' in the socket I-I, I get the largest possible surface for clampin g to prevent the turning of the shovel when at work. Thus breakage of bolts and set-screws by overstraining is avoided, as the Ordinary tightening of the bolt h is sufficient to effectually hold the stem or shovel fastening, be the socket part of the foot-piece or part of the IOO shovel. Manifestly, instead of using the nut on bolt h, the opening for the bolt in one of the sections `or lips of the socket might be threaded to form a serew-bearing for such screw.

It Will be understood that my improvement is applicable to double-shovel plows and similar implements as well as to cultivators, and I do not desire to be confined to the use of such improvements on cultivators alone.

It is preferred to arrange the ratchets, as shown, at the outer ends of the cheeks, for the reason that but verylittle spreading of the cheeks is, because of such arrangement, required to disengage the ratchets, and the rivet D need not be looser than itwouldhave to be i to allow the turning of the clieeks on their pivot .when at work, whereas .if the ratchets were at the upper end of the foot-piece, then thepivot-D would. have to be a bOlt and nut,

so it could be loosened to spread the cheeks sufficiently to disengage the ratchets, and the nut Would be: a continual source of annoyance by coming off, as it would be required to be ybut loosely drawn, and .the lower pivotl would necessarily have to beabolt also. There Would thusbe two nuts to. loosen at every Change instead of one, 'besides the mi practicability of usinga .bolt for the upper pivet- The spring J renders the change of pitch very convenient, and the Vfoot-piece being cast with pivot, spring-seat, slot, and-socketin one integral piece is'no small point of advantage.

Having thus described my invention, what I l scribed, for cultivators, plows, and the like, the combination, Withv the cheek-plates and the foot-piece pivoted between such checkplates, of a spring whereby to force such cheek-plates apart, and a clamping or connecting bolt by which to hold said cheek-plates against the action of the spring, all substantially as and for the purposes specified.

3. The combination of the cheeks having serrations b, the foot-piece pivoted between the eheeks and having serrations e3 and opening E', the spring fitted` in opening E' and hearing between the cheeks, and the clamping -or Vconnection bolts, substantially as set forth. v

1zLvThe improved `attachment herein described, comprising the cheeksrB, having openingse'z and serrations or teeth 17,' the foot-piece having ratchets 63, slot 62,' and studs e, and the clamping or connection bolt, substantially as herein described..

5. In an attachment, substantiallyasdescribed, the combination of the beam, the cheeks provided at their loWerends With ratchets'and pivoted above such ratchets to r the beam, the foot-piece pivoted above such ratchets to the cheeks and provided below its pivotl -with ratchets, and the clamping-bolt,

V substantially as .set forth.

6. The improved attachment herein described,V consisting of the cheeks having openings e' and serrations b, the foot-piece having socket II at its lower end, provided 'near its upper end Withstuds e to enter openings e', and providedbelow zsuch studswith open- Ving E' and with ratchets 63 and slot 62, the

spring fitted in .opening E' and hearing between the cheeks, and the clamping` or connecti-ng bo1t,`s ubstantially as set forth;

CHARLES. R. I'IARTMAN.

Witnesses:v

E. H. DEVWOLF, W. IAI. DE WoLF. 

